WGTdbloshoe:
That is correct for the CTTH, once the hole is completed the information already sent to the the server so not a way to change it currently. They are in the process of coming up with a way to go back or to enter information.
To me the best value of this course notebook comes into play in practice stroke play rounds. Where you can hit a shot see the result take a mulligan and enter notes about the shot and test that way. This gives you the chance to dial in your shots in different conditions and different clubs.
This issue is relevant not only for CTTH. I suppose for stroke play there are separate note pages for approach shots and for putting, i.e. once you make an approach shot and reach the green, you can only make a note on the putting page, which would be of little use there, if you can't view it while making your approach next time...
I don't know how many people play practice - I don't, and for me the most use from the notes would be to mark info relevant for the approach shot like how to approach some complicated greens (hello, Merion!) or which side of the hole has good and which awful putting lines. And now one can only make these notes once s/he is on the putting green, when incidentally the fairway page is not available...
I think it's important to fix this ASAP for the notebook to be useful.